Abstract: A stern drive is for propelling a marine vessel in water. The stern drive has an upper drive unit with a lower mounting surface; a lower gearcase coupled to the lower mounting surface and a trailing end surface that is angled relative to the lower mounting surface; and a propeller shaft extending forwardly from the lower gearcase and being configured to rotate a propeller for pulling the marine vessel in the water. The upper drive unit and the lower gearcase are configured such that when a forward side of the lower gearcase impacts an underwater obstruction, the lower gearcase is caused to pivot relative to the upper drive unit until the trailing end surface impacts the lower mounting surface, which thereby causes the lower gearcase to completely uncouple from the upper drive unit.

Abstract: The subject of the invention is a one piece interlock forming member used in metal casting, comprising a tapered member adapted to fit in the match plate, which is used in the core or mold forming process in such metal casting operations; the subject interlock forming member comprises a cylindrical member with a conically shaped upper portion, constituting the male member, with a conically shaped chamber inside the lower cylindrical portion, such chamber constituting the female portion, and which interlock forming member shapes corresponding male and female interlocks in the drag and cope sections of the flask used in metal casting.

Abstract: The subject invention is a manually operated device used for the purpose of facilitating the process of inserting and removing temporarily placed plugs in and out respectively of gas jet openings in core molding machines, said device being comprised of a longitudinal disposed member having an insert assisting end and a removal assisting end, each adapted for such special purposes. The insert assisting end is adapted with a cylindrically shaped head that can fit in the plug's central cavity, while the removal assisting end has a cylindrical head with a slightly enlarged circular nodule on its extreme end.

Abstract: The subject invention is a process for improving the performance capacity of chaplets or spacer supports as used in metal casting as supports adjacent the mold cavity, said process comprising the steps of immersing the chaplet into a water-based solution of borax and thereupon employing the chaplet in the molding process with said solution covering the chaplet.